两种常用方式
1、异步请求
// 0.根据用户名和密码拼接URL
// 创力url：
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:
@"http://122.33.44.55:8586/login_check_byPhone?userName=%@&passWord=%@",userName,pwd]];
//NSLog(@"url:%@",url);
// 1.创建请求对象
NSURLRequest *request = [NSURLRequest requestWithURL:url];
// 2.发送请求，创建一个子线程进行监控服务器响应的数据
[NSURLConnection sendAsynchronousRequest:request //发送请求
queue:[[NSOperationQueue alloc] init] //创建一个子线程
completionHandler:^(NSURLResponse * _Nullable //回调Block 返回的头
response, NSData * _Nullable data, //返回的数据体
NSError * _Nullable connectionError) { //返回的错误
// 3.响应数据解析
NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"%@",str);
// HUD必须要在主线程才能进行操作
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
if ([str containsString:@"success"]) {
[SVProgressHUD showSuccessWithStatus:@"登陆成功"];
}else{
[SVProgressHUD showErrorWithStatus:@"登陆失败"];
}
}];
}];
2、代理方法
// 创力url：
NSURL *url = [NSURL URLWithString:@"http://120.25.226.186:32812/login?username=123&pwd=123"];
//NSLog(@"url:%@",url);
// 1.创建请求对象
NSURLRequest *request = [NSURLRequest requestWithURL:url];
// 2.创建请求连接
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
#pragma mark - NSURLConnectionDataDelegate 常用的几个代理方法
/**
* 请求失败
*
* @param connection
* @param error
*/
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
NSLog(@"%s,%d-----%@",__func__,__LINE__,error);
}
/**
* 开始接收数据，如果数据比较大，会多次调用该函数
*
* @param connection
* @param data
*/
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"%s,%d----%@",__func__,__LINE__,str);
}
/**
* 接收服务器的响应
*
* @param connection
* @param response
*/
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
NSLog(@"%s,%d----%@",__func__,__LINE__,response);
}
/**
* 数据接收完成后调用
*
* @param connection
*/
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
NSLog(@"%s,%d",__func__,__LINE__);
}
